I am following the installation instructions on the provided youtube link and when it gets to uploading the XML file, my import seems to fail or doesn't seem to be 100%. 

Here are the messages I am getting below:

Failed to import post tag 
Failed to import post tag 
Failed to import post tag 
Failed to import post tag 
Failed to import post tag 
Failed to import 
Failed to import 
Failed to import 
Failed to import 
Failed to import 
Failed to import 
Failed to import 
Failed to import Media “slider 2”
Failed to import Media “slider 3”
Failed to import Media “slider”
Failed to import Media “logo-intro”
Failed to import Media “Deep Inspire”
Failed to import Media “01Electronica_Music_by_Igormaykop951_preview”
Failed to import Media “02Indie_Rock_Music_by_OctoSound_preview”
Failed to import Media “disco-3”
Failed to import Media “event”
Failed to import Media “event1”
Failed to import Media “event2”
Failed to import Media “parallax”
Failed to import Media “artist”
Failed to import Media “bio”
Failed to import Media “bg-bio”
Failed to import Media “album”
Failed to import Media “bg-disco”
Failed to import Media “bg-disco”
Failed to import Media “bg-disco”
Failed to import Media “bg-disco”
Failed to import Media “bg-disco”
Failed to import Media “bg-disco”
Failed to import Media “tour”
Failed to import Media “-text-1”
Failed to import Media “-text”
Failed to import Media “-text-3”
Failed to import Media “-text-4”
Failed to import Media “-text-1”
Failed to import Media “-text”
Failed to import Media “-text-1”
Failed to import Media “-text”
Failed to import Media “-text-4”
Failed to import Media “-text-3”
Failed to import Media “-text-1”
Failed to import Media “-text”
Failed to import Media “bg-disco”
Failed to import Media “disco-3”
Failed to import Media “02Indie_Rock_Music_by_OctoSound_preview”
Failed to import Media “01Electronica_Music_by_Igormaykop951_preview”
Failed to import Media “Deep Inspire”
Artist “Artist Name” already exists.
Artist “Artist Name” already exists.
Artist “Artist Name” already exists.
Album “UNDER THE IRON SEA” already exists.
Album “FRIEND, FAMILY, ENEMY” already exists.
Album “SPECTRUM” already exists.
Album “PERFECT SYMMETRY” already exists.
Failed to import Media “logo-intro”
Failed to import Media “slider”
Failed to import Media “slider 3”
Failed to import Media “slider 2”
Failed to import Media “disco-3”
Failed to import Media “02Indie_Rock_Music_by_OctoSound_preview”
Failed to import Media “01Electronica_Music_by_Igormaykop951_preview”
Failed to import Media “Deep Inspire”
Failed to import Media “logo-intro”
Failed to import Media “slider”
Failed to import Media “slider 3”
Failed to import Media “slider 2”
Failed to import Media “logo”